styloid proress of the radius ExreusoR Canpr Raolalrs LoNGUS Lower Te of lateral Base of Radial nerve supra-condylar metacarpal bone ridge (dorsum) Common extensor Base of the origin (front of lateral metacarpal bone interosseus nerve

 

Med. & lat. lntermuscular septum.

Ulnar tuberosity Musculo-cutaneous

& radial nerves

(Double N. supply)

Main Flexion of the

elbow joint

SuncICAL IMPoRTANcE: {r Myositis ossificans.

Top of the olecranon

process of the ulna

Lonq head: infraglenoid tubercle of

scapula.

Lateral head: back of

the humerus !gl4! to

spiral groove

Media! head: back of

the humerus medial

to spiral groove

SUNCICAL IMPORTANT:

Radial nerve Main

Extensor of

the elbow

. Triceps: intramuscular injection.

. Fracture dislocation around elbow.

o Triceps tendon reflex.

TnICEPS

UPPER LIMB I

!.3tHl hsdd at tr&ePs

R{dE}g,wof hwffi

Lm0 tBsd of tiBps b.&hli

Ohcrancn Ef

ulnn

&Btts Ue !.{$crrFf,galar{tsl

PIP tumal{dsF[ahngd

AP nHalfiteBhahEg€sl

Ardhre ffihFr afr hlEN

I UPPER LIMB

Roxorqmflm

8rfcrlbblr

ld5.r Ardltr

. lrbdrtial

These include:

- Pronator teres.

- Flexor carpi radialis.

- Palmaris longus.

- Flexor carpi ulnaris.

- Flexor digitorum superficialis.

Thev arise bv a common tendon from the front of medial epicondyle of

humerus (common flexor origin).

o Thev are flexors of the elbow ioint.

. All are supplied by median nerve except flexor carpi ulnaris by ulnar nerve.

PnorueToR TERES

Humeral head:

CFO. (front of

medial epicondyle

of the humerus)

Ulnar head:

coronoid process

of ulna

Middle of

Lateral surface

of Radius.

Median nerve Pronation

Flexion of elbow &

wrist & radial

deviation of wrist

SUnC|CAL IMPORTANCEI Median n. may be compressed between its 2

heads.

Common flexor

origin (CFO)

Bases of 2nd & Median nerve

3'd palmar

Fuexon CanPrRADrALrs

PPER LIMB

PaInaaRIS LoNGUS

Common flexor Palmar origin aponeurosis

SunClcAL IIUIPORTANCEI rts tendon can be used as a tendon graft.

Median nerve Flexion of the wrist

Flexon cnnPr uLNARrs {F

Humeral: common

flexor origin.

Ulnar: posterior

border of the ulna

Pisiform bone Ulnar nerve

(Piso-hamate &

piso-metacarpal

ligament are

continuations of

its tendon)

Flexion of the elbow

& wrist & ulnar

deviation of the

wrist

FuexoR DrcrroRuM SupERFrctALrs {*

Humero-ulnar: 4 tendons each Median nerve

common flexor split ) attached origin to sides of

Radial: anterior middle phalanx

oblique line of the of medial 4

radius fingers

- Flexion & ulnar

deviation of the

wrist

- Flexion of

proximal lP joint of

medial 4 fingers

It lies in an intermediate plane between superficial & deep flexors

it gives 4 tendons deep to flexor retinaculum

Its synovia! sheath is common with that of flexor digitorum profundus

ln front of wrist its tendons are arranged in two strata.

I UPPER LIMB

Jofirtsl

Mffi M€ecnpoplrdarsoal

HF ffimallrionhalffisgd

pofllcBlongc olP DH*lirtoryhahngel

H*ordElhnxr

troilund$

ffilryei lhryor

FIexoR DIGIToRUM PnoruNDUS

Upper la of the

front of the ulna

Base of the

terminal phalanx

of the medial 4

fingers

LalYz. anterior

interosseus

nerves

MedYz ulnar

nerve

Flexion of medial 4

fingers at the DIP

ioint & flexion of the wrist *

FlexoR PolLrcrs Loncus

Upper Vs of front of Base of the Anterior interosseus

radius terminal phalanx nerve

of thumb

Flexion of the thumb

& flexion of wrist

Front of the lower

Tnot ulna

Front of the Median nerve

lower lnof radius

Pronation

UPPER LIMB I

Upper Tz of lateral Radial nerve Mid-prone position

supra-condylar

ridge

Base of the

styloid proress

of the radiu

supra-condylar

ridge

Base of the

styloid proress

of the radius

ExreusoR Canpr Raolalrs LoNGUS

Lower Te of lateral Base of Radial nerve

supra-condylar metacarpal bone ridge (dorsum)

Common extensor Base of the

origin (front of lateral metacarpal bone interosseus nerve

Extension & radial

deviation of the

wrist

Extension & radial

deviation of the

wrist

ExreusoR Canpr Reolalrs BREVIS

epicondyle) (dorsum)

UPPER LIMB I

ExrerusoR DlctroRuM

Common extensor

origin

Extensor

expansion of

med 4 fingers

Posterior

interosseus nerve

Extention of the

medial 4 fingers &

the wrist

ExrerusoR Drcrn MrNtMr

Common extensor

origin

Extensor

expansion of

little finger

Posterior

interosseus nerve

Extension of the

little finger

Extension of the

wrist & elbow &

ulnar deviation

Base of the 5 Posterior

metacarpal bone interosseus nerve

Common extensor

origin

AttcoNEUS

ExreruSOR CnnpI ULNARIS

Back of the lateral

epicondyle of the

humerus

Upper % of the

back of the ulna

Radial Extension of the

elbow

I UPPER LIMB

Supinator fossa of

the ulna

Posterior surface

of the radius

Posterior

interosseus

nerve

Supination & extension of

the elbow

AeoUcToR PolucIS LoNGUS

Back of the radius, Lateral of base Posterior

ulna & interosseus of the 1't interosseus

membrane metacarpal bone nerve

Back of radius &

interosseus

membrane

Middle % of the

posterior surface of

the ulna & the

interosseus

membrane

Dorsum of the Posterior

base of proximal interosseus

phalanx of the nerve

thumb

Abduction of the thumb

Extension of the thumb at

Extension of all the joints

of the thumb

Dorsum of the Posterior

base of the interosseus

terminal phalanx nerve

of the thumb

ExTeNSOR POIIICIS BREVIS

ExreNSoR PouIcIS LoNGUS

UPPER LIMB I

ExreNSoR lttorcrs

Back of the lower

part of ulna &

interosseus

membrane

Extensor

expansion of

index finger

Fetrl{f lfi[rlaor*ll.ffi

{ooilhdo.tE!

ds4D/fidrd

rad8rstrd

kEBL*

lrffimLExtcff

Posterior

interosseus

nerve

Extension of the index

finger

ArrtE ir

hmE€or.r8tlgrf

-t I

I

Tlmr

ld(tucffi pdlbi* find first E6lmr

I*Ersc€€ou$ hegn 1ffi0 msdld

Scle oa 6&nsor hood

Htrulr6nt

*m

brffdr o{ madHr tEttr6

OEsp hanchd

tfrrfft€ry ffdn*'n.

Fkorc#IlittrBs

tbficiorpdlidr banir

illEdlrfimrlE

Fhruf;stlriaDulun

These include:

,ml--.u- :lffi g ttrenar rrurscles fnbductor pollicis brevis, Flexor pollicis brevis, &

Opponens pollicis) + 1 muscle deep to them (Adductor pollicis).

o Medial qroup (4 muscles):